She went on to speak of the agony of losing a child and how it had affected her in the years following.

She said: "[For] anyone who has lost a child it's that agonising part of it, but in this instance as well, being a parent of another child, when there's no resolution, there's just fear.

"There's the whole dilemma, and horror and nightmare of living on a daily basis with the loss of your first child, and then there's the fear that because something you've never believed would happen has happened, you've lost that safety net.

"I'm glad people don't people don’t feel like I feel.

"I’m glad people don’t go around thinking the worst will happen, as it’s a hellish way to live."

Flowers and tributes at the scene of an arson attack on Hemdean Road, Caversham in May 1997 (Image: Reading Post)

In the incident which in the early hours of Saturday morning 20 years ago, an unknown person poured petrol through the door of the Silvani's home set it alight.

The fire was incredibly intense, and Mrs Silvani was able to rescue Zach, but was not able to reach Emily, who was asleep in another part of the house.